
/* Copyright (c) 2007-2011, Maxim Makhinya  <maxmah@gmail.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of Eyescale Software GmbH nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef EVOLVE_RAW_VOL_MODEL_RENDERER_H
#define EVOLVE_RAW_VOL_MODEL_RENDERER_H

#include "glslShaders.h"
#include "rawVolModel.h"
#include "sliceClipping.h"

namespace eVolve
{
class RawVolumeModelRenderer
{
public:
    RawVolumeModelRenderer(const std::string& filename,
                           const uint32_t precision = 1);

    bool loadHeader(const float brightness, const float alpha)
    {
        return _rawModel.loadHeader(brightness, alpha);
    }

    const VolumeScaling& getVolumeScaling() const
    {
        return _rawModel.getVolumeScaling();
    }

    void glewSetContext(const GLEWContext* context)
    {
        _glewContext = context;
        _rawModel.glewSetContext(context);
    }

    bool render(const eq::Range& range, const eq::Matrix4f& modelviewM,
                const eq::Matrix4f& invRotationM,
                const eq::Vector4f& taintColor, const int normalsQuality);

    void setPrecision(const uint32_t precision) { _precision = precision; }
    void setOrtho(const uint32_t ortho) { _ortho = ortho; }
    const GLEWContext* glewGetContext() { return _glewContext; }
    bool loadShaders();

private:
    void _putVolumeDataToShader(const VolumeInfo& volumeInfo,
                                const float sliceDistance,
                                const eq::Matrix4f& invRotationM,
                                const eq::Vector4f& taintColor,
                                const int normalsQuality);

    RawVolumeModel _rawModel;   //!< volume data
    SliceClipper _sliceClipper; //!< frame clipping algorithm
    uint32_t _precision;        //!< multiplyer for number of slices
    GLSLShaders _shaders;       //!< GLSL shaders

    const GLEWContext* _glewContext; //!< OpenGL function table

    bool _ortho; //!< ortogonal/perspective projection
};
}
#endif // EVOLVE_RAW_VOL_MODEL_RENDERER_H
